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# -*- coding: utf-8 -*-
#
# AWL simulator - instructions
#
# Copyright 2012-2017 Michael Buesch <m@bues.ch>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from __future__ import division, absolute_import, print_function, unicode_literals
#from awlsim.common.cython_support cimport * #@cy
from awlsim.common.compat import *
from awlsim.common.exceptions import *
from awlsim.core.instructions.main import * #+cimport
from awlsim.core.operatortypes import * #+cimport
from awlsim.core.operators import * #+cimport
class AwlInsn_GENERIC_CALL(AwlInsn): #+cdef
"""Generic callback pseudo-instruction.
This instruction calls the supplied callback."""
__slots__ = (
"callback",
)
def __init__(self, cpu, callback, **kwargs):
AwlInsn.__init__(self, cpu, AwlInsn.TYPE_GENERIC_CALL, **kwargs)
self.callback = callback
def run(self): #+cdef
try:
self.callback()
except AwlSimError as e:
# An exception occurred. We try to blame that on the
# instruction calling us, so the user gets a
# sane error message.
if len(self.cpu.callStack) >= 2:
cse = self.cpu.callStack[-2] # Previous stack frame
ip = cse.ip - 1
if ip >= 0 and ip < len(cse.insns):
# Assign the calling instruction to the exception.
insn = cse.insns[ip]
e.setInsn(insn)
e.setRawInsn(None)
raise e
raise # Out of luck
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